program ZK;
uses utree;
const C=4;
var F,G : text;
    P   : pnode;
    N   : integer;
procedure vid(P:pnode; D:byte; var G:text);
  begin
    if P<>nil then
      with P^ do
        begin
          vid(left,D+C,G);
          writeln(G,' ':D,A:3);
          vid(right,D+C,G);
        end
             else
      writeln(G,' ':D,'%:3');
  end;
begin
  readln(N);
  assign(F,'vstup.txt');
  assign(G,'vystup');
  reset(F);
  rewrite(G);
  P:=tree(N,F);
  vid(P,0,G);
  close(G);
end.